Bottle cap



FIG. 1 is a top plan view of the bottle cap showing of my new design;

FIG. 2 is a side perspective view thereof;

FIG. 3 is a front and back elevational view thereof;

FIG. 4 is a left and right side elevational view thereof; and,

FIG. 5 is a bottom plan view thereof.

The broken line showing a threaded stopper on the drawing disclosure depicts environmental subject matter only and forms no part of the claimed design. 

I claim the ornamental design for a bottle cap, as shown and described. 